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A. G. WELCH AND A. WEIGEL.

ANTIFRICTIN BEARING.

APPLxcATloN FILED FEB. la, 191s.

Patented ept. 16, 1919.

2 SHEETS-SHEET I.

A. G. WELCH AND A. A. WEIGEL.

ANTIFRICTION BEARING.

APPLICATION FlLED FEB'. 16.1916.

Patentedept. 16, 1919.

2 SHEETS-SHEET 2.

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VA IEBEIRlll' G.'W'ELCH AND ARNOLD A. WEIGEL, CHICAGO, ILLINOIS, ASSIGNORS, BY MESNE ASSIGNMENTS, TOSOPIIIE L. WOODS-, F CHICAGO, ILLINOIS.

.anrIraro'rIoN-:enanma To all wlzom may concern:

Be it known that we, ALBERT G. Wenen Vand ARNOLD A. WEIGEL, citizens 'of the United States, and residents of Chicago, in

the county ci Cook and State of Illinois,

have invented certain new and useful llmprovements in Antifriction-Bearings; andV we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the. letters of reference marked thereon, which form a part yof this specification.

rlhis invention relates to improvements in antiiriction bearings and is more particularly applicable to side bearings for railway cars. matters hereinafter described and, more particularly pointed'out in the' appended claims. l The` object of the invention is to provide an antifriction bearing wlich will automatically adjust itself to the shifting positions oi the parts between which it is interposed, as :for instance the body and truck holsters of a railway car, so that the transv mittedv load is at all times distributed equally to the antifriction element in the direction 0i its rotative axis. The improved bearing thus provides for the relative rocking or swaying movement of the holsters in their vertical" plane and eliminates the unequal wear of said element.

Other objects and advantages will appear as we proceed with our specification.

lln the drawings:

Figure 1 is a view partly in side elevation and partly in longitudinal section of an antiiriction bearing made in accordance with our invention.

Fig. 2 is a top plan view of our improved antiiriction bearing, with a part ci the casing shown as broken away to more clearly show the interior construction thereoi.

Fig. 3 is a view in end elevation thereof.

Fig. l is a transverse sectional view through our improved antiiriction bearing, the plane of the section being'indicated by the line d-ll of Fig. l.

Fig. 5 is a view in perspective of the casing forming a part of our improved bear- Y, ing., a part of said casing bein illustrated as broken away to more clear y illustrate The invention consists oi the Speoication of Letters Patent.- Patented Sept, 16, 1919, Application mea February 1e, 191e.y serial No. rasee.

Fig. 6 isa view in perspective-of the rocking 'member or shoe located within the casmg and upon which the antifriction elements are adapted to travel.

Referring nojw to that embodiment of our invention illustrated in the accompanying drawings: indicates a casing which incloses the antifrictionl bearing and ll--ll indicate the antifriction elements contained therein. The antifriction elements are in the 'form of rollers which are adapted to travel 1n a longitudinal path in said casing. As herein illustrated the antifriction bearing is attached to the truck bolster of a railway car. 13 indicates the said truck bolster and lll indicates the associated body bolster Vwith which the Ibearing is adapted to be engaged.

The casing 10 is preferably 'of rectangular', elongated form and is open at its top and bottom. It comprises upright side and end walls 15 and 16 respectively and made integral with the side walls are laterally proJecting ears 10a-10EL by means of which the casing is attached to the truck bolster 13. Intermediate its ends said casinl is provided with av transverse web 17, w ich braces the casing 10 at this place and divides it into two compartments. In each compartment is located one of the antifriction elements or rollers 11 which is adapted for a limited longitudinal travel in its compartment. lllach side and end wall is provided at its top edge with an inwardly extending flange 15M-161 respectively, which together with the transverse wall 17, dene openings 18 in the top of the casing through which the periphery of said rollers project. The said sidewall danges 15EL act also to prevent vertical displacement of the antifriction elements 11 as will presently apear. r

Within the bottom olf the casing 10 and bearing upon the truck bolster 13, is a rocker or shoe 20 which substantially closes the open bottom ofthe casing. Said rocker walls 22 and upright side walls 23 which are made thicker than said end walls. The bottom surface 21n of said bottom wall 21 is curved or rounded transversely for a purpose soon to appear. The side walls 23 are depressed below the end walls 22, throughout the greater part of their length and are curved upwardly approaching said end walls as indicated at 24. To the top edge of each side wall 22 is fixed a we ar plate 25 which is curved upwardl at its ends to fit the curved ends of said s 1 e walls.

Each antifriction element 11 1s in the form of an intermediate roller body 11 with reduced end .bearing extensions 11". .'Ifhe elements are thus generally of the famlliar form of a roller with trunnions fixed at its ends, but the trunnions which constitute the bearing extensions 11b are preferably of greater diameter relative to the diameter of the body of the roller than is usual The said bearing extensions, or trunnions, engage and are adapted to roll upon the wear plates or rails 25 at the sides of the shoe 20 and transmit the load through said shoe to the truck bolster. The body 11a of the antifriction element, on the other hand, pro3ects through the slots 18 defined by the anges 15V at the top of the casing, as has been pointed out, and receives the load from the body bolster.

Ateach end of the rocker or shoe 2( are fixed lugs 26-26 which engage within downwardly facing U-shaped bosses 27 formed integral (as shown) with the end walls 16 of the casing 10. Said lugs 26 and bosses 27 have registering apertures 28 through which a cotter pin may be inserted to hold said casing and rocker together 1n shipment.

On the inner face of each side wall 15 of the casing in the vicinity of the transverse partition wall 17 are formed bosses 2929 which extend into the vertical plane of the upright side walls of the rocker. The bottom edge of each boss terminates a short distance below the vbottom edge of. said transverse wall 17 and during the rocking movement of said rocker or shoe, said bottom edges of said bosses are adapted to be engaged by and assist in limiting the-transverse rocking movement of said rocker upon its associated bearing surface formed by the to surface of the truck bolster.

`he lateral upright faces 29a of said bosses 29 are curved downwardly and outwardly near their bottom ends to form shoulders which coact with the upturned ends'of the wear plates 25 to be engaged by the trunnions 11b of the antifriction elements 11 to limit the longitudinal movement of said elements in said casings. When said trunnions are in engagement with said shoulders and upturned ends of the wear plate 25 respectively, they will act as bearings against which the antifriction elements may rotate about an immovable axis, thus allowing for a greater amplitude of swinging movement between the body and truck holsters.

When said antifriction elements are in the proper position in the casing with their trunnions 11b engaging and having rolling bearing upon the bearing rails or plates 25, the top of the roller body 11n projects above the casing so as to be engaged by the body bolster 14 but the bottom of said body is above the top surface of bottom wall 21 of said rocker and is thus free.

In the antifriction bearing herein before described the. load is transmitted from the body bolster to the bodies 11a of the antifriction elements and thence through the trun nions or bearin extensions 11b to the side rails of the roc ier 20, which rests and is adapted to rock upon the top of the body bolster.

It is apparent that when the load transmitted is greater at'the ends of said antifriction elements 11 at one side of the casing than at'the other, the rocker will rock transversely of the casing and the antifriction elements will be automatically brought to a position to present the full intended contact.

Our improved antifrict'ion bearing comprises but few parts which may be cheaply and economically constructed of the required strength to stand the strain imposed upon them. The arrangements of the parts are as such that a greater amplitude of swinging movement of the body bolster relative to the truck bolster is accommodated for by the provision of two peripherical bearing surfaces of different diameters. This construction allows for the use of two independent traveling antifriction elements in a comparatively short casing as the distance through which said elements move in said casing is materially reduced by the provision of such bearing surfaces.

While in describing our invention we have referred to certain details of mechanical construction andv arrangement of parts, we do not wish to be limited thereto except as may be pointed out in the appended claims.

We claim as our invention:

l. An antifriction bearing comprising in 11e combination with a support providing a bearing-surface, a rocker having a bearing surface of an area approximately equaling its plan area, said rocker bearing surface being adapted to engage the bearing surface on said' support, one of said bearing surfaces being a curved surface, an antifriction bearing having rolling bearing on said rocker and movable in the direction of the axis of the rocking movement thereof and means for retaining said antifriction element in operative relation with said rocker.

2. An lantifriction bearing comprising in combination with a support providing a dll all

inmensaA hearing surface, a rocker having a hearing surface of an area approxnnately equallng 1ts plan area, said rocker bearmg surface being adapted to engage the bearing surface on said support, one of said bearing surfaces being a curved surface, said rocker having spaced rails extending parallel to its aXis of rocking movement, an antifriction element having trunnions which have rolling bearing on said rails-and means for retaining said antifriction element in operative relation with said rocker.

3. An antifriction hearing comprising a casing, a rocker in said casing, said rocker having a curved bearing surface on which it is adapted for a rocking movement transversely of said casing and an antifriction element longitudinally movable in said casing and having a rolling hearing on said rocker.

l. An antifriction bearing comprising a casing, a rocker in said casing, having a transversely curved bearing surface of an area approximately equaling the plan area of said rocker, an antifriction element adapted for a rolling bearing on the opposite side of said rocker and means limiting therolling movement of said antifriction element.

5., An antifriction hearing comprising a casing, a rocker in said casing adapted Afor a rocking movement transversely of said casing, said rocker having longitudinally eX- tending spaced bearing rails, an antifrietion element comprising a roller having trun nions, said roller being adapted to receive the load and to transmit it through said` trunnions, which have rolling bearing onl said spaced hearing rails, said casing having means forl retaining said antifriction element in proper relation within the casing.

6. An antifriction hearing comprising a casing, a rocker in said casing adapted for a rocking movement transversely of said casing, said rocker having longitudinally eX- tending spaced bearing rails, an antifriction element comprising a roller having trunnions, said roller being adapted to receive the load and to transmit it through said trunnions, which have rolling bearing on said spaced rails, said casing' having means for retaining said antifriction element in proper relation within the cz'rsingl and means limiting the longitudinal movement of said antifrction element in said casing.

7. An antifriction bearing comprising a casing open top yand bottom, a rocker in said casing, said rocker having a transversely curved bottom hearing surface upon which it is adapted to rockin said casing, and having longitudinally extending spaced hear ing rails on its top side, 'an antifriction element having bearing trunnions carried on the rails of said rocker, said casing having means preventing vertical displacement of said antifriction element and means on said casing for limiting the rocking mi vement of said rocker in said casing.

8. fin antifriction'bearing comprisingin comblnatlon with a support, a casing open top and botom, fixed t'o said support, said support providing a bearing surface deined hy .sald casing, a rocker located within said casing adapted to rock on said bearing surface of said support 'transversely of said casing, said rocker having longitudinally eX- tendlng upwardly facing bearing rails an antifriction element having bearing trunnlons .which are adapted for rolling bearing on said upwardly facing bearing rails of said rocker, said casing having means for preventing vertical displacement of said antlfriction element.

Quan antifriction hearing comprising in combination with a support, a casing open top and bottom, lined to said support, said support providing an upwardly facing bearing surface defined by said casing, a roclrer in said casing, said rocker having a transversely rounded loottoni hearing surface adapted for engagement on the upwardly facing bearing surface of said support, and longitudinally extending u wardly facing spacedrhearing rails, a plura ity of antifriction elements carried by said rocher, said elements each having trunnions adapted for rolling bearing on said upwardly facing bearing rails of said rocker, said casing having means and said rocker having means at the ends of said upwardly facing hearing surfaces limiting the rolling bearing of said trunnions on said rails.

10. An antlfrlction hearlng comprlsing in 4combination with 'a support providing an upwardly facing bearing surface, a casing open top and bottom, fixed to said support, said casing having means dividing it into two compartments, a rocker in said casing, said rocker having longitudinally spaced rails on its top side and a transversely rounded bottom hearing surface adapted for engagement on said upwardly facing hearing surface of said support, an antifriction element located in each compartment of said casing, each of said elements having-trunnions adapted for rolling bearing on said spaced rails of said rocker, and said rocher having means and said casing having means limiting the rolling movement of said antifriction elements on said spaced rails of said rocker.

ll. lin an antifriction bearing, a rocker therefor, said rocker having a transversely rounded bottom bearing surface and longitudinally extending upwardly facing spaced bearing rails on its top surface said hearing rails terminating in upwardly curved portions at their ends.

12. ln a side bearing for railway ears, a bearing plate, a roller to engage said late, a cradle having side members which em race till iet

lllll llli said roller and support the same, a' member upon which' the cradle is seated, and asad#` dle secured to said member and adapted fior engagement with said cradle to hold it to lts seat. y

13. In a side bearing for railway cars, a bearing plate, a roller to engage said plate,

a cradle having side members tovembrace and support said roller, a member uponwhich the cradle is seated, and a saddle secured to said member and holding said cradle to its seat.

. 14C. In a side bearing for railway cars, a bolster having` a bearing surface, an opposed bolster, a saddle secured thereto, a cradle having side members, and a roller supported b and between said side members, the sadd e belng adapted for engagement with said cradle to hold it to its seat upon said opposed bolster but permitting an osoillatin movement between the saddle and the er e.

In testimony, that we claim the foregoing as our lnvention we aix our signatures in the presence of two witnesses, this 3rd day of February A. D. 1916.

ALBERT G. WELCH. ARNOLD A. WEIGEL.

T. H..ALFREDS, KARL W. DALL. 

